package net.zjitc.servlet;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.StringReader;

/**
 * Created by Administrator on 2017/10/9.
 */
@WebServlet(name = "BServlet",urlPatterns = "/bServlet")
public class BServlet extends HttpServlet {
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

    }

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        //先取出session
        HttpSession session=request.getSession();//不加参数
        //如果没有session对象，则输出提示页面
        response.setContentType("text/html;charset=utf-8");
        PrintWriter out=response.getWriter();
        if (session == null){
            out.write("没有滚");
        }else{
            String s=(String) session.getAttribute("key1");
            out.write("key1的值为："+s);
        }
    }
}
